shoal The term 'shoal' as it applies to the area of coastlines can be defined as ' (1) (noun) a detached area of any material except rock or coral. the depths over it are a danger to surface navigation. similar continental or insular shelf features of greater depths are usually termed banks. (2) (verb) to become shallow gradually. (3) to cause to become shallow. (4) to proceed from a greater to a lesser depth of water'.

About the author

Author: Mark McCracken is a corporate trainer and author living in Higashi Osaka, Japan. He is the author of thousands of online articles as well as the Business English textbook, "25 Business Skills in English".